Question 1

An overloaded extraction or insertion operator should return ___________

Accepted Answer

a referenc

Question 2

The copy constructor for a class is called

Accepted Answer

A)  when an object of the class is passed by value to a function. 
B)  when an object of the class is initialized by another object of the class 
C)  when a function returns an object of the class 
D)  all of the above 
A)  when an object of the class is passed by value to a function. 
B)  when an object of the class is initialized by another object of the class 
C)  when a function returns an object of the class 
D)  all of the above

Question 3

The assignment operator must be a _________ of the class.

Accepted Answer

The answer of The assignment operator must be a _________...

Question 4

A friend function needs to be passed an object of the class. If the friend only needs to access the object, but not change its data members, then the object should be passed as _______________

Accepted Answer

a constant

Question 5

Who can access private data in a class?

Accepted Answer

A)  members of the class 
B)  friends of the class 
C)  everyone 
D)  B and C 
E)  no one 
A)  members of the class 
B)  friends of the class 
C)  everyone 
D)  B and C 
E)  no one

Question 6

How many parameters are there in a binary operator implemented as a friend?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  as many as you need 
A)  0 
B)  1 
C)  2 
D)  as many as you need

Question 7

Which of the following would be an appropriate function declaration to add two rational numbers?

Accepted Answer

A)  void friend operator+ const Rational &left, const Rational &right); 
B)  void operatator+ const Rational &left, const Rational &right); 
C)  friend Rational operator+ const Rational &left, const Rational &right); 
D)  Rational operator+ const Rational &left, const Rational &right); 
A)  void friend operator+ const Rational &left, const Rational &right); 
B)  void operatator+ const Rational &left, const Rational &right); 
C)  friend Rational operator+ const Rational &left, const Rational &right); 
D)  Rational operator+ const Rational &left, const Rational &right);

Question 8

If obj1 and obj2 are both objects of a class that uses dynamic memory allocation, but the class does not have an assignment operator, what happens if you execute the following code?
Obj1=obj2;

Accepted Answer

A)  A syntax error occurs, you can not assign one object to another object without the = operator 
B)  A run-time error occurs, because the C++ system does not know how to do the assignment. 
C)  The pointers) to the dynamically declared memory in obj2 are copied to the corresponding pointers in obj1. 
D)  There is a complete and independent copy of all the dynamic memory from obj2 to obj1 
A)  A syntax error occurs, you can not assign one object to another object without the = operator 
B)  A run-time error occurs, because the C++ system does not know how to do the assignment. 
C)  The pointers) to the dynamically declared memory in obj2 are copied to the corresponding pointers in obj1. 
D)  There is a complete and independent copy of all the dynamic memory from obj2 to obj1

Question 9

Which of the following are valid declarations for an assignment operator for a class named myClass?

Accepted Answer

A)  void friend operator = myClass& left, const myClass& source); 
B)  void operator = myClass& left, const myClass& source); 
C)  void friend operator = const myClass& source); 
D)  void operator = const myClass& source); 
A)  void friend operator = myClass& left, const myClass& source); 
B)  void operator = myClass& left, const myClass& source); 
C)  void friend operator = const myClass& source); 
D)  void operator = const myClass& source);

Question 10

The destructor for a class is called

Accepted Answer

A)  explicitly from the main program 
B)  when the class is instantiated 
C)  when the object of the class goes out of scope 
D)  Only at the end of main 
A)  explicitly from the main program 
B)  when the class is instantiated 
C)  when the object of the class goes out of scope 
D)  Only at the end of main

Question 11

Friend functions are members of the class.

Accepted Answer

A) True 
 B)False

Question 12

The following is a properly declared overloaded insertion operator for myClass.
ostream& operator <<ostream &out, const myClass &obj);

Accepted Answer

A) True 
 B)False

Question 13

Operators must be friends of the class.

Accepted Answer

A) True 
 B)False

Question 14

Friend functions may directly modify or access the private data members.

Accepted Answer

A) True 
 B)False

Question 15

Write the function declaration for a copy constructor for a class named myClass

Accepted Answer

myClass co

Question 16

Which of the following operators can not be overloaded?

Accepted Answer

A)  = 
B)  == 
C)  . 
D)  [] 
A)  = 
B)  == 
C)  . 
D)  []

Question 17

An operator that expects two parameters is called a ________ operator.

Accepted Answer

The answer of An operator that expects two parameters is...

Question 18

An operator that expects only one parameter is called a ________ operator

Accepted Answer

The answer of An operator that expects only one parameter...

Question 19

If a given task being performed by a function involves more than one object, then that function should normally be a __________ function.

Accepted Answer

The answer of If a given task being performed by...

Question 20

Given the following class, which is the correct function header for the display function?
Class Rational
{
Public:
Rational);
Rationalint numer, int denom);
Rationalint whole);
Int getNumerator);
Int getDenominator);
Friend void displayostream& out, const Rational& value);
Private:
Int numerator;
Int denominator;
};

Accepted Answer

A)  friend void displayostream& out, const Rational& value) 
B)  void displayostream& out, const Rational& value) 
C)  void Rational::displayostream& out, const Rational& value) 
D)  friend void Rational::displayostream& out, const Rational& value) 
A)  friend void displayostream& out, const Rational& value) 
B)  void displayostream& out, const Rational& value) 
C)  void Rational::displayostream& out, const Rational& value) 
D)  friend void Rational::displayostream& out, const Rational& value)

An overloaded extraction or insertion operator should return ___________

The copy constructor for a class is called

The assignment operator must be a _________ of the class.

A friend function needs to be passed an object of the class. If the friend only needs to access the object, but not change its data members, then the object should be passed as _______________

Who can access private data in a class?

How many parameters are there in a binary operator implemented as a friend?

Which of the following would be an appropriate function declaration to add two rational numbers?

If obj1 and obj2 are both objects of a class that uses dynamic memory allocation, but the class does not have an assignment operator, what happens if you execute the following code? Obj1=obj2;

Which of the following are valid declarations for an assignment operator for a class named myClass?

The destructor for a class is called

Friend functions are members of the class.

The following is a properly declared overloaded insertion operator for myClass. ostream& operator <<ostream &out, const myClass &obj);

Operators must be friends of the class.

Friend functions may directly modify or access the private data members.

Write the function declaration for a copy constructor for a class named myClass

Which of the following operators can not be overloaded?

An operator that expects two parameters is called a ________ operator.

An operator that expects only one parameter is called a ________ operator

If a given task being performed by a function involves more than one object, then that function should normally be a __________ function.

Introduction to Computer and C++ Programming

C++ Basics

More Flow of Control

Procedural Abstraction and Functions That Return a Value

Functions for All Sub Tasks

Io Streams As an Introduction to Objects and Classes

Arrays

Strings and Vectors

Pointers and Dynamic Arrays

Defining Classes

Separate Compilation and Namespaces

Pointers and Linked Lists

Recursion

Inheritance

Exception Handling

Templates

Standard Template Library

Filters

Exam 11: Friends, Overloaded Operators, and Arrays in Classes

An overloaded extraction or insertion operator should return ___________

The copy constructor for a class is called

The assignment operator must be a _________ of the class.

A friend function needs to be passed an object of the class. If the friend only needs to access the object, but not change its data members, then the object should be passed as _______________

Who can access private data in a class?

How many parameters are there in a binary operator implemented as a friend?

Which of the following would be an appropriate function declaration to add two rational numbers?

If obj1 and obj2 are both objects of a class that uses dynamic memory allocation, but the class does not have an assignment operator, what happens if you execute the following code? Obj1=obj2;

Which of the following are valid declarations for an assignment operator for a class named myClass?

The destructor for a class is called

Friend functions are members of the class.

The following is a properly declared overloaded insertion operator for myClass. ostream& operator <<ostream &out, const myClass &obj);

Operators must be friends of the class.

Friend functions may directly modify or access the private data members.

Write the function declaration for a copy constructor for a class named myClass

Which of the following operators can not be overloaded?

An operator that expects two parameters is called a ________ operator.

An operator that expects only one parameter is called a ________ operator

If a given task being performed by a function involves more than one object, then that function should normally be a __________ function.

Introduction to Computer and C++ Programming

C++ Basics

More Flow of Control

Procedural Abstraction and Functions That Return a Value

Functions for All Sub Tasks

Io Streams As an Introduction to Objects and Classes

Arrays

Strings and Vectors

Pointers and Dynamic Arrays

Defining Classes

Separate Compilation and Namespaces

Pointers and Linked Lists

Recursion

Inheritance

Exception Handling

Templates

Standard Template Library

Filters